GB1572590A - Magnetic recording medium - Google Patents

Magnetic recording medium Download PDF

Info

Publication number
GB1572590A
GB1572590A GB14735/78A GB1473578A GB1572590A GB 1572590 A GB1572590 A GB 1572590A GB 14735/78 A GB14735/78 A GB 14735/78A GB 1473578 A GB1473578 A GB 1473578A GB 1572590 A GB1572590 A GB 1572590A
Authority
GB
United Kingdom
Prior art keywords
recording medium
magnetic recording
dispersion agent
amine
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14735/78A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB1572590A publication Critical patent/GB1572590A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/7013—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dispersing agent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/31765—Inorganic-containing or next to inorganic-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31942—Of aldehyde or ketone condensation product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper
    • Y10T428/31996—Next to layer of metal salt [e.g., plasterboard, etc.]

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB14735/78A 1977-04-18 1978-04-14 Magnetic recording medium Expired GB1572590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7704183A NL7704183A (nl) 1977-04-18 1977-04-18 Magnetisch registreermedium waarin als disper- geermiddel een n-acylsarcosine derivaat wordt toegepast.

Publications (1)

Publication Number Publication Date
GB1572590A true GB1572590A (en) 1980-07-30

Family

ID=19828374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14735/78A Expired GB1572590A (en) 1977-04-18 1978-04-14 Magnetic recording medium

Country Status (7)

Country Link
US (1) US4153754A (nl)
JP (1) JPS5923007B2 (nl)
BE (1) BE866051A (nl)
DE (1) DE2815027C2 (nl)
FR (1) FR2388362A1 (nl)
GB (1) GB1572590A (nl)
NL (1) NL7704183A (nl)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585457B2 (ja) * 1978-11-30 1983-01-31 ティーディーケイ株式会社 磁気記録媒体
JPS55117739A (en) * 1979-03-03 1980-09-10 Hitachi Maxell Ltd Magnetic recording medium
JPS5898833A (ja) 1981-12-07 1983-06-11 Fuji Photo Film Co Ltd 磁気記録体
JPS5982633A (ja) * 1982-11-02 1984-05-12 Sumitomo Chem Co Ltd 親油性表面を有する磁気記録用研磨剤
US4584243A (en) * 1982-11-01 1986-04-22 Sumitomo Chemical Company, Limited Abrasive, production thereof and use thereof in magnetic recording medium
GB8402801D0 (en) * 1984-02-02 1984-03-07 Ici Plc Dispersion
JPS6153368A (ja) * 1984-08-22 1986-03-17 Nippon Zeon Co Ltd 磁性塗料
EP0208041B1 (en) * 1985-01-22 1991-05-15 Imperial Chemical Industries Plc Dispersant containing composition
CA1288881C (en) 1985-10-04 1991-09-10 Ismael Colon Phosphorylated reaction products and compositions incorporating such products
JPS6289220A (ja) * 1985-10-15 1987-04-23 Hitachi Maxell Ltd 磁気記録媒体
CA1278399C (en) * 1985-10-15 1990-12-27 Charles Neale Merriam Vinyl chloride resins and compositions incorporating such resins
EP0244024A1 (en) * 1986-04-29 1987-11-04 PD Magnetics B.V. Magnetic recording element
WO1990014672A1 (en) * 1989-05-26 1990-11-29 Wyman John E Superparamagnetic fluids and methods of making superparamagnetic fluids
US5064550A (en) * 1989-05-26 1991-11-12 Consolidated Chemical Consulting Co. Superparamagnetic fluids and methods of making superparamagnetic fluids
US5114798A (en) * 1991-06-19 1992-05-19 Aluminum Company Of America Memory disc lubricated by N-acyl sarcosine derivative
US5916355A (en) * 1998-08-11 1999-06-29 Sony Corporation Corrosion inhibitor for magnetic media
CA2434032A1 (en) * 2001-01-09 2002-07-18 Wastewater Biological Solutions Corp. Apparatus and method for biological treatment of environmental contaminants and waste
TWI310570B (en) * 2004-07-30 2009-06-01 Jfe Mineral Co Ltd Ultrafine metal powder slurry
DE102005049136A1 (de) * 2004-12-01 2006-06-08 Degussa Ag Zubereitung, enthaltend ein polymerisierbares Monomer und/oder ein Polymer und darin dispergiert ein superparamagnetisches Pulver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1929171C3 (de) * 1969-06-09 1979-06-07 Basf Ag, 6700 Ludwigshafen Schichtmagnetogrammträger
US3647539A (en) * 1970-02-09 1972-03-07 Ampex Magnetic recording tape and method for preparing the same
US3804810A (en) * 1970-12-30 1974-04-16 Du Pont Cross-linked polyurethanes based on aromatic/aliphatic copolyesters
JPS5133758A (nl) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
JPS585454B2 (ja) * 1975-05-06 1983-01-31 株式会社東芝 ジキキロクバイタイ
US4020236A (en) * 1975-07-22 1977-04-26 Fuji Photo Film Co., Ltd. Process for producing a magnetic material and magnetic recording medium containing the same

Also Published As

Publication number Publication date
JPS53129606A (en) 1978-11-11
BE866051A (fr) 1978-10-17
JPS5923007B2 (ja) 1984-05-30
DE2815027A1 (de) 1978-10-26
FR2388362B1 (nl) 1985-02-15
NL7704183A (nl) 1978-10-20
FR2388362A1 (fr) 1978-11-17
DE2815027C2 (de) 1985-08-01
US4153754A (en) 1979-05-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee